Cam locating and staking machine



Jan. 12, 1932. G. ETUBBS CAM- LOCATING AND STAKING MACHINE Filed April 14, v1930 5 Sheets-Sheet `2 Geox' e Jan. 12, 1932. G. E. TUBES CAM LOCATING AND STAKING MACHINE Filed April 14, 1930 5 Sheets-Sheet 3 nu Geor e, ubb

@5M QV Patented Jan. I2, 1932 'UNITED vstraTf1:s

PATENT OFFICE GEORGE E. TUIBBS, F HILLSDALE, MICHIGAN om' LocA'rrNe AND smxme MACHINE Application led April 14, 1930. Serial No. 443,942.

shaft in accordance with the disclosure of v vention is direct-ed to a practical and eicient machine for attaining these desired results whereby the cams may be properly located both as to spacing apart and as to angular position ona plain cylindrical shaft and staked thereto, that is, secured in the proper positions in which they have been located. Understanding of the invention may be had from the following description, taken in connection with the accompanying drawings, in which, f

Fig. 1 is a front elevation of the machine yof my invention.

Fig. 2 is a plan View thereof.

Fig. 3 is a transverse section substantially on the plane of line 3 3 of Fig. l.

Fig. 4 is a fragmentary enlarged transverse section substantially on the same plane as' Fig. 3. Y

Fig. 5 is a fragmentary enlarged transverse vertical section substantially on the plane of line 5 5 of Fig. l. y

L Fig. 6 is a fragmentary section showing a part of the elements disclosed in Fig. 5 in further detail.

Fig. 7 is a fragmentary longitudinal section through the machine on the plane of line 7 7 of Fig. 6. I

Fig. 8 is a fragmentary horizontal section and plan through the construction shown in Fig. 5 substantially on the plane of line 8 8 of Fig. 5.v i

' therefrom, described.

Fig. 9 is a view taken along the plane of the line 9 9 of Fig. 1.

Fig. v.10 is a fragmentary vertical transverse section of the cam shaft with a cam thereon and the manner in which the cam is staked on the shaft.

Lilie reference characters refer to like parts in the different ligures of the drawings.

In the construction shown a machine having some similarities to a lathe is used, having the usual bed construction including Vspaced apart sides 1 supported at the ends by legs or end supports 2 and with a tail stock 3 equipped with a tail stock spindle and center 4 in the usual manner. yThe head stock is of a special form of construction. It includes a base or body 5 with spaced apart vertical ends 6 carrying spaced bearings 7 for the head stock shaft which is equipped with a-hand wheel 8 at its inner end and a head stool: center 9. The hand wheel 8 in the present construction is of a special form having a slotted lug l() extending horizontally the use of which will be later Between the head and tail stock centers the shaftll, 'ron which the cams are to be placed, is located. The cams 12 are placed loosely over the shaft, end bearings 13 and 14 are secured to the shaft in any suitable manner and 'in some instances, where intermediate bearings are to be attached to the shaft 11, they may be slid over the shaft in proper position between certain of the cams and thereafter welded to the shaft at the same time the cams are welded after the cams have been staked in position. The end bearing 14 adjaeent'the head stock center 9 has a pin 15 projecting therefrom which is received in the slot of the lug 10 whereby on turning the .hand wheel 8 the shaft 11 turns with it.

On the head stock shaft between the bear? ings 7 a drum 16 is mounted which is cut from one end to the other with a helical square threaded screw; and at certain predetermined positions in the bottom of the screw thread thus made openings 17 are formed in the drum. I

At the front of and below the axis of the drum'16 a horizontal guide bar 18 is located ...and permanently secured at its ends-tothe vertical ends 6.of the'head stock. A block 19 is slidably mounted on the bar. 18. It isv provided with a forwardly extending brack-H j et 20 having an upturned end through which' J and the upper portionof the Yblock 19 a rod 21 is slidably guided. This rod is acted upon by a compression spring 22 tornormally force the same forward vso thatits front end, riding in the helical screw lon the drum 16, immediately enters any opening 17 when it comes thereto. The outer or frontend of' therod 21 is equipped with a rsmall, disc or wheel, 23. ,v v.

fTwo spaced apart arms24 extend forward from the end portions 6 of the vhead stock between which is, ahorizontal shaft 25 rotatably mounted at itsends inthe arms24. Two verticalarms 26; are pinned to the shaft,l one adjacent each-end thereof,and between g their upper ends` a flat plate 27 extends, the upper edge portionof which passes between the disc or wheel 23 and the adjacent brack- Yet 20' (see Fig.`4). -A lever 28 is secured Y tothe shaft 25 between its ends and its rear screw 29,"as shown in Fig. 4. The front end end is provided with a Yvertical-adjusting has a downwardly extending rod 30 connected thereto which, at its lower end, vis pivotally vsecured .to ailever 31 (Fig. 3) which with Y 2- a similar lever 31a arepivotally mounted at `their rear ends on the end vsupports 2 of theY -machine. Their front ends are kconnected by a foot board 32.whereby theoperator of the machine standing at substantially any placefat thefrontronl stepping on the foot board pulls downwardly on the rod 30, rocking shaft Y25 andthereby withdrawing the rod 21 from any openingin the drum 17in .whichy it maybe seated; whereupon theoperator, by'manually operating'the vhand wheel 8, can turn thedrum to a different position andthe rod 21, having been released its 'inner or rear Y drum until the reached. 1

Aend willA ride in the helical groove on the'.

vnext Vadjacent opening 17 is A carriage 33 is slidably mounted on the bed and vis movable lengthwise thereof,` a' horizontal rack 34 being located lengthwise ofthe bed below the carriage, `with which Vap-inionv35 meshes, manually operableby'a` front `hand wheel 36, both the pinion and wheelbeing mounted on a shaft 37 carried bythecarriage. At the rear side of the carriage a vertical post 38 is secured. A bar-539 is pivotally mounted at 40 (Fig. 5) between Y tegral .with the post.

its ends andnormallyrests on a `stop 41 l'in-, A weight 42 at the rear end of the 'bar 39 counter balances a pneumatic hammer construction mounted at the front portion ofsaid b'ar.- v At the'.V front end of thebar 39 al verticali cylinder 43 receives compressed air through f i a valve l44 .to which 'a hose 45 for carrying 'shaft 11 as shown 'in' Fig. 5.'- Y, VVA slide bar 58'rides over the upper side of the block 51 between the sides 52 and underneatlrthe block 55 whereby moving ,the`

the air is" connected, the passage ofkair from the hose being controlled by the valve. A11

outlet pipe46 from the cylinder 43 connects with two pipes of hose-47 through which the air is led to thecylinders 448 of two pneumatic hammer constructions located at an an- -.-gle to the vertical .and carriedon a'base 49 Y. in turn bolted onvv the -bar 39gl Thepointed projecting ends 50 VVof the hammer plungers extend4 downwardly` toward each other so as to comeon'e'oneither side ofV a cam 12 on the shaft 11 and indent metal of the cam and shaft'where the cam'contacts with the shaft kand 4thusstake 0r `secure the cam in position on 'thebsh'aftf' The, specific structure of a pneumatic hammerisfgwell known and specificallyis not novelin the present'invention, "exceptpossibly in the pointed` staking members 50.1 A s ,The carriage 33 is formedr with an integral upwardlyextending block 51 the upper side of whichis recessed making two spaced apart sides 52; and plates `531eXtend between the upper portions of said sides 52 landare secured` thereto. The front side of the block 51v has a downwardlyv and forwardly inclined `projection 54 througlrwhich a Vdownwardly 1 and forwardly inclined opening Yis made for a purpose hereafter described.

' The sides 52 on-the block-.51, together with the plates 53 form vert-ical guides for a' bloclr 55 which Vhas an inclinedv under surface. The block- 55'i's divided or recessed-at its upper sideforthe reception ofafdie 56 having a triangular shaped notchor recessin its upper side,= while at each side thereof isa securing l'plate 57 y(see.y Fig. 7). The notchin the block 56, is shapedto receive the projecting or pointed portion of a cam 12 to thereby hold it against rotative movement on the` slide 58 lengthwise will raise or lower block g55 and block 56. In theunderside of the slide bar 58v anotch 59A is made, the forward part of whichis inclined as best shown in Fig. 5.

yA handle GOjis attened `at one end, as indownwardlyV the'plunger 64isforced down whereupon both the-"handle and `theifbar 58 vmay be drawn forward.` Alocking rod or dog 66 is freely mountedin the inclined opening in the projection 54. A plunger 67 actedupon by a coilfspring 58 (Fig. 5) engages in a notch in the dogL 66 tending to niove the' dog `upwardly so that its upper end will seat in the notch or recess 59 when bar 58 has been drawn to a forward position. The lower end of the dog 66 is formed with a tooth 69 adapted to seat in any one of the spaced recesses 70 in an elongated bar 71, said bar lying directly over the front side 1 of the bed and underneath the carriage which is movable over it;l whereby with the parts in the position shown in Fig. 5, the carriage is locked against movement, but upon grasping the handle 60, turning it in a downward direction a short distancey and then pulling the same forward, the dog 66 is elevated when its upper end enters the notch 59, thereby disconnecting the tooth 69 from the recess 70 in the bar 71 in which it has been located, aermitting manual operation of hand wheel 36 to move the carriage 33 and attached parts to a different position.

A bracket 72 (Figs. 5 and 8) is bolted on the carriage at the front side thereof. It has an upturned or vertical front portion to the upper end of which a cylindrical housing V73 is permanently secured. A coiled -compression spring 74 in the housing acts upon a headed pin 7 5 which passes through the bracket and normally extends back thereof directly in alignment with the flattene portion 61 of the handle 60. f

-Vith a plurality of the cams 12 loose on the shaft 11, the carriage is moved and locked in the first position by engagement of the dog 66 with the first notch in bar 71, the cam 12 having previously been located with its point seated in the notch of the block 56, this being done'by withdrawing the slide bar 58 to permit a lowering of the block 56', turning the cam so that its point is downward and directly over the notch, and then moving the slide bar 58 back to the position shown in Figs. 5 and 6. The drum 16 is turned by operating wheel 8 so that the rod 21 seats in the first opening 17 at the left hand end of the drum. This turns the shaft 11 to proper position with reference to the cam which is held with its point extending in a downward direction. The carriage, the shaft and the cam are thus secured against movement. The pneumatic hammer or staking tools 48 are operated by opening the valve at 44 and the metal of the cam is indented into the shaft at two points in the length of the shaft or where the indenting orstaking heads engage therewith. The cam is, in this manner, properly located and secured to the shaft with suflicient firmness that it will not disconnect therefrom during the succeeding welding operation which welds the cam to and completely around the shaft at each side thereof. p

When the first cam has been thus staked the bar 39 is tilted upwardly about the pivot 40, and it will remain in upward position through the counterbalance caused by the weight' 42. Handle 60 is grasped, tinned downward and pulled forward until the notch 59 receives the upper endo tf 66 whereupon the carriage is flee t changed in position. The hand wheel 86 is turned to move the carr'* to the next position defined by the secont etch 70. ns soon as the carriage has been moved away from first position the handle may be reeased. ln moving' the handle and attached `lide 58 to outer position, the end of the pin T5 is struck against and it is moved against the force of the spring 74 thereby compressthe tooth 69 e lower end of the dog 66 cornes to the notch 70, spring 74 to move the ar 58 ing such spring. As soon to its inner position, shown in Figs. anc 7, moving the dogs 66 downward fainst he spring` 68 and elevating the block 5 anl die 56. Before such elevation of the 5 and die 56 occurs the next cam 12 l at it is engaged thereby to hold the cam ,4 ist rotative movement.

The kcam is thus located proper y in the length of 'the shaft an d heid against rotative movement, but the shaft must be turned so as to locate the cam in proper angular relation thereto and to the other cam which has been secured in place. This is dene by stepping on the foot board 32 to withdraw the rod 21, rotating the hand wheel 8 and immediately releasing the locking rod 21 after the rotation has begun and continuing the rotation until the next succeeding opening 17 in the drum 16 is entered by said rod 21. The cam is then located properly with regard to angular position on the shaft and the bar 89 with attached pneumatic staking tools is brought to its lower position, as in Fig. 5, and the operation of staking the cam on the shaft repeated.

This operation of staking the cams to the shaft is repeated for each cam thereon. There are as many notches in the bar '71 as there are canas to be secured. Likewise there are as many holes 17 in the druni 16 for reception of the rod 21 as there are cams to be secured. 'Vith this construction the cams are very quickly and easily staked in properly spaced relation in the length of the shaft and in proper angular relation around the shaft and to each other for the cams to be thereafter welded to the shaft in accordance with the Yassenoff patent previously mentioned.

The invention described has proved very practical for the purposes for which it is designe-d. The drum 16, in effect is an indexing element for properly turning the shaft to the position which it should have Withrespect to any cani held with its-point Y downward as the cammust bemade to loev engaged by the die 56. The invention is detinedin the appended claims' and is to be f'considered comprehensive of all forms yof structure coming VWithin ytheir scope.

volaim: j Y

l. in a machine `of the class described, -v

means for holding and, turning a shaft, said llshaft having a cam `loose thereon, means: for holding Vthe cani against movement either lengthwise of orfaround the shaft, means for i g-'sliaft ahontits longitudinal axis, said shaft havinguac'ani loose thereon, means for engaging rthen'cain and holding it against rotation on the shaft and also holding it against longitudinal movement on the shaft, means Y 27forinanually turning the shaft with the cam held against movement, means for automaticallyv stopping the turning of the sha ft at a predetermined position thereof and for releasably holding it viny such position, and means for fixing the cam to the shaft While the shaft andsaid cam are both held against movement, y

3. A' machine,A of the class described oomprising, a support including a bed and head y'and; tail stock .centers spaced from each other thereon, said centers being adapted to carry a shaft with a cam loose thereon, means mountedxon'the. bed for movement length- VWise thereof adapted to releasably engage 'With the cam and hold the same from turning movement around the shaft,means for releasablyflocking said movable cam engaging means at a predetermined position on the Vbedetothereby locate `thecain at' a predetermined position in the vlength of said shaft, manually operable means adapted to turn the shaft, releasable meansautomatically stopping said shaft turning meansy at a predetermined selected position and thereby hold -the shaft inthe position to Whichlit has been turned, and means for fixing the cam on the shaft Withthe cani and shaft intliefpositions at Which they are held. 4. Aconstruction containing the elements in r combination dened in claim 8, combined With means for releasably holding said cam holding means vin any of a plurality of differ# ent po-sitions in the length of the bed Whe-re vvby .a cam on'the shaft may be held ina-ny of predetermined number ofpositions in the length ofthe shaft, and means for stopping and holding saidmanual operable shaft rof tating meansin any one of a corresponding number of predetermined positions, one for I eachposition which' a cam may have on theV shaft, 'substantially as and for the purposes' described.:` f

5. In a `machine of thefclassfdescribed, aI

support comprising a 1 bed and. spaced head and tail stock centersv adapted to receive a succession and hold the same against turning movement, means for releasably ylocking the carriage to the bed at any one of a plurality Y of spaced apartpositions" inthe lengthofthe 'bed,eineans for locking the shafty against rotation in any one of a plurality of positions, one for each cam on the shaft, and means for securing the cams'insuccession' to the shaft',

Wit thefshaftand said cams held against movement during the securing operation.

YG. ln" a construction of thefclass described, a siipportcomprising, a bed and head and tail stocks including centers spaced from each other saidhead and tail stocks beine ada ted f' to receive a shaft*therebetweenwith a cam looseon said sha-ft, means mounted on the bed for releasablyengaging with the cam to hold 'it against movement aroundV the shaft, said means Valso holding tlie'cam against movement lengthwise of the shaft, means for manually turning the shaft, means for locking the sha-ftagainst turning movement after it has been turned a predeterminedfdistanceto aselected position, and vmeans fonsec'uring the thereof, means for releasably locking 'said cam holding means in any of a plurality of` different positions', one for eachV cam' on the shaft, and'mean's for locking the shaft against rotationv in anyY of apluralityof different positions, one foreach cam .on the'v shaft.

8. In a construction of lthe classdescribed,

' asiipport comprising, a Abed' and head and tail Vstocks including centers spaced `froni -each other, said centersbeing adapted to receive a sh-aft`tlierebet-Ween, afhand-Wheel in'- cluded in said headv stock, means Connecting. thefshaft and hand Wheell for rotating the shaft by the hand Wheel, a, drum rotatable with said'f hand Wheel having a continuous spiral groove therein With openingsin the` drum atthe'bottom of the-'grooveY and at different points 'in thelength of said groove, there being a. plurality of cams loose on said shaft, a carriage v mounted for lengthwise movement of and on the bed, releasable means on the carriage to engage a Cain:V and hold itagainst rotative movement, means for 'i opening thereon when the drum is turned to bring an opening to the rod, substantially as and for the purposes described.

9. A construction containing the elements in combination defined in claim 8, combined with foot actuated means for withdrawing'y said looking rod from any opening in the drum with which it is engaged.

10. A construction containing the elements 'in combination defined in claim 8, combined with power operated means mounted on said carriage for staking each cam to the shaft by indenting metal of the cam into the shaft.

11. n'a' machine of the class described, a

' support 'including a bed, means on the bed 'between which thereon may be carried, a carriage mounted shaft having a cam loose for movement lengthwise of the bed under said shaft. means for releasabl' lockinO the Z J D carriage to the bed as any one of a number* of spaced points i: the length of said bed,

means on the carriage releasably engaging' with the cam to hold it against movementJ around the shaft, and means for simultaneously engaging said cam engaging means with the cam and lookin the carriage to the bed.

12. A construction containing the elements in combination deined in claim 11, combined with a post extending upwardly from the carriage, a pivotally mounted on the post, and pneumatic staking means carried on said bar and adapted to be located directly over said shaft and cam and having staking heads adapted to extend downwardly one at each side of th cam, said bar with attached pneumatic staking means being tiltable to move i said staking means away from the cam and ing a plurality of spaced apart notches therein, a dog on the carriage to engage in any said bar, manually operable means on said carriage movable to two positions in one of which said dog is vmoved into engagej ment with a notch in the bar and in the other of which the dog mayfbeireleased from said bar, and cam engaging means on said carriage to releasably engage with a cam and hold it against longitudinal movement on the shaft; f

14. In a machine of the class described, a bed, head and tail stocks thereon between which a shaft may be mounted, said shaft being adapted to have a plurality of cams placed loosely thereon, a carriage mounted for movement to different positions in the length of the bed, a bar located iengthwise of the bed having a plurality of spaced notches therein, a dog movably mounted on the carriage to engage in any of said notches to which it is brought, spring means tending to move the dog away from the bar, a slide bar mounted on the carriage and movable to two extreme positions, said slide bar engaging with the dog to move it into a notchv of the first bar in one position and in the other of said positions releasing said dog to disengage from said notch, a vcam engaging block movably mounted on said carriage over said slide bar, said slide bar having an in-l clined upper face whereby on movement to the position in which the dog engages with a notch in the first bar, said block is elevated and'to engage with a cam on the shaft to hold it against rotative movement around the shaft, and also against longitudinal movement lengthwise of the shaft by reasonof the deg lookin g the carriage against movement.

15. A construction containing the elements in combination defined in claim 14, combined with spring impelled means against which said slide bar engages when moved to a position to release the dog and cam engaging die, and means on said slide bar engaged by the dog operating to automatically move the dog into engagement with a notch in said first bar through the action of said spring impelled means when the carriage is moved to bring the dog to any notch in said first bar.

16. Means for securing a cam loose on a shaft at a fixed position on said shaft comprising, means for rotatably mounting the shaft, releasable means for engaging the cam to hold it against rotative movement around the shaft or longitudinal movement lengthwise thereof, means for turning the shaft to a predetermined position, means for securing the cam to the shaft with the shaft and cam held against movement with respect to each other.`

17. Means for securing a plurality of cams on a shaft, the cams being first placed loosely over said shaft comprising, means for supporting the shaft for turning movement, means for successively releasably engaging with each cam to hold it against rotative movement around the cam. means for successively locating each cam at a predetermined place in the length of the shaft and holding it against movement lengthwise thereof, means for turning the shaft with respect to each cam after it has been located on the shaft to a predetermined position, means for 1 Y y' V l#1,849,990

Ament after suchposition is reached',v Y and meansfor securing eachv cam in succession Y to the shaft While it is held against movev ment with respect to the shaft and the shaft y 5" held against movement with respect tothe V.Cami i,

v 18. In a vmachine of*` the class described, means forrevolubly mounting a supporting element,jsa1d supporting element having an- .vm objeotloose thereon,- means for holding the object against movement 'around the supporting element7 means for turning the sup- ,e porting element to a predetermined position7 l saidilast mentioned means including a drum K 4.15 Xedto-thesupporting element, said drum having a helical path thereon,` stop means v locatedy at predetermined points along the path vand Ymeans eoacting with said stop fmeans lwhereby thev movement of the sup- 20, portingelement is controlled.

l .19; In a machine of the class described.v 1 means fory holding and turning a shaft, said `shaft lhaving a-Koam loose thereommeans for V; holding the cam against movement around n f ,z5 the shaft, kmeans for turning the shaft to a predetermined position,L 'releasable means for holding the shaftvin such position Yand meansl forrvfxing the'cam on the shaft yvvhile it and the shaft are held against movement; Y

su' 1 20. Inra machine yof the "Character de-' seribed,-me"ans for holding and turning a shaft, said shaft having'a Cam loose thereon,A means for holding the cam against movement either lengthwise of lor aroundv the shaft, aafmeansfor turning the shaft to a predetere* mined position, and releasable. iI neanswforv n holdingthe--shaft in such position'. -v Y. l;

vIn testimony whereof I afliX mv signature. Y

GEORGE iaTUBBs.` Y 

